State Boyle’s law. - Leaving Cert Physics - Question d - 2019

Boyle's Law states that for a fixed mass of an ideal gas at constant temperature, the pressure (P) of the gas multiplied by its volume (V) is a constant. This can be mathematically expressed as:

$PV = k$

where k is a constant for a given amount of gas at a specific temperature. It can also be expressed in the inverse relationship of pressure and volume:

$P imes V ext{ is constant}$

This means that if the volume increases, the pressure decreases, provided the temperature remains the same, and vice versa.